Or maybe it's about tax-payer money going towards private, for-profit schools that have absolutely NO accountability. Why are the teachers unions the ONLY one's that have a problem with this? ALL tax payers should have a problem with this!!!

The program, created in 2001, served about 60,000 youngsters this past school year and has long had support from Florida state leaders. In fact, the Florida Legislature passed a law this spring that expands the program, funded by corporate donations.

The lawsuit is to be announced at a 10:30 a.m. Tallahassee press conference.

The Florida Education Association in 2006 successfully challenged the legality of Florida's first school voucher program. That Opportunity Scholarship program -- a first in the nation -- provided private-school tuition vouchers to students at some failing public schools.

The Florida Supreme Court ruled that program violated the state's Constitution by taking money from public education and by failing to provide the "uniform" system of schools the document requires.

The tax-credit program, however, is funded differently since corporations provide the funds -- and, in return, get a credit on on their state tax bills. So the new lawsuit could hinge on other arguments and legal issues than those in the earlier case.

The tax-credit program is the largest of Florida's school voucher program. Two others, the McKay Scholarship program and the new Personal Learning Scholarship Account program, serve children with disabilities.

The Florida PTA and other public-school advocacy groups opposed to the program argue it diverts money away from public schools because it uses funds that would otherwise go to state coffers. They also dislike that more than 70 percent of participating private schools are religious, arguing state money shouldn't support religious education.

And they also say it is not fair for Florida to support private schools that do not face the strict accountability rules that govern public schools, such as high-stakes testing and A-to-F school grade.

Program supporters argue its popularity proves it provides a needed service, offering options to parents whose kids may be struggling in public school but cannot afford private school on their own. Enrollment has swelled in recent years, with more than 110,000 students starting applications for the 2014-15 school year, though only about 67,000 will get scholarships based on funding.

They say the program saves the state money since the scholarship is less than the state pays to educate a student in public school. And they argue it rightly puts parents in charge of finding the best school for their child.